Machine for splitting and splaying the ends of metal bars.



" Patented Oct. 20, 1908.

E. WRIGLEY.

APPLICATION TILED J ULY 10,1907.

I MACHINE FOR SPLITTING'AND SPLAYIHG THE ENDS 0P METAL BARS.

ATTORNEYS.

W ITN E 53 E S THE WWW, D. c

ed by a strap or like device.

UNITED sTA'rEs BATENT onnion.

EDWARD WRIGLEY, OF AUCKLAND, NEW ZEALAND.

MACHINE FOR SPLITTING AND SILAYING THE ENDS OF METAL BARS.

Specification of Letters Patent.

Application filed July 10, 1907.

Patented Oct. 20, 1908.

Serial No. 383,106.

I To all whom it may concern:

Be it known that I, EDWARD WRIGLEY, a subject of the King of GreatBritain, residing at Auckland, in the Colony of New Zealand, haveinvented a new and useful Machine for Splitting and Splaying the Ends ofMetal Bars; and I do hereby declare the following to be a full, clear,and exact description of the same.

This invention relates to a machine for use in splitting and splayingthe ends of metal bars, which bars are to be employed in ferroconcreteconstructional works, or for other purposes in which the'ends of metalbars require to be split and splayed out to provide for an increasedanchorage or holding surface.

The machine devised comprises a power shaft, to which rotatory motion iscommunicated by any suitable motive power. On the shaft are secured twoeccentrically mounted disks or cams, each one of which is surround- Toeach strap is pivoted one end of a connecting rod or lever, and theother ends of these levers are pivoted in such a manner as to be capableof radial movement upon a common fixed axis.

Attached to each lever, is a steel shear plate, and the two plates,together with the evers to which they are attached, are so disposed thatthe ad acent faces of the shear plfites shall be in close engagementwith each ot er.

Each shear plate is recessed on its internal face, and extendingoutwards to its front edge,

the recess formed, being so shaped as to provide a straight cutting edgeextending horizontally across the surface of the plate, and for awidened mouth to the opening of the recess in the edge of the late. Thetwo plates are so disposed, when t e levers to which they are attached,are closed to their fullest extent, that the horizontal cutting edge'ofone recess shall be a distance below that of the other sufficient toallow of the bar to be split, passing between the two edges, and the recesses are made of sufiicient depth to allow of the insertion of theend. of the bar between them.

In the accompanying drawings, which illustrate the invention :-Figure 1is a side elevation of the means devised. Fig. 2 is a side elevation, onan enlarged scale, of the two shear plates, the near lever being removedfor the purpose of clearness of illustration, and the shear plates beingshown in the position adapted to receive the end of the bar to be split.Fig. 3 is an end elevation thereof. Fig. 4. is a side elevation of theshear plates, showing the positions assumed towards the end of thesplitting operation. Fig. 5 is an end elevation of the same. Fig. 6 is aview of an end of a bar split in the manner desired.

A, is the operating shaft that is driven by any suitable power, and onwhich are secured the eccentrics B, B.

C, C are the eccentric straps surrounding the respective eccentrics, B,B.

D, D are the levers that are articulated at one end to the respectivestraps, C, C, and at their other ends are mounted upon, a common fixedaxis E, so that upon the revolution of the eccentrics, these levers willbe given an opening and closing movement upon the axis E, in the mannershown by dotted lines in Fig. 1.

F, F, are the shear plates that are secured upon the inside faces of therespective levers D, D which levers are so disposed in their distanceapart as to provide for the adjacent faces of the shear plates being inclose contact, as shown specially in Figs. 3 and 5.

Each shear plate is formed with the depression or recess G, on itsinternal face, which is of the form shown in the drawings, and providesa straight cutting edge g extending inwards from one edge thereof, andan inclined opposite edge g that inclines outwards to the same edgeofthe plate.

The two cutting edges 9 are so disposed, that when the levers are in theclosed position shown in Figs. 2 and 3, they shall lie in parallellines, enough distance one below the other, to allow of the bar H to besplit, lying between them. The recesses G, are also made of such a depththatthe bar will extend for half its cross sectional area into eachrecess.

When the end of the bar has thus been placed between the shear plates,and the shaft A is rotated to open the levers, the two cutting edges gwill impinge upon the bar, one below and one above it, so that as themovement of the levers continues, the bar will be split into two halves.These halves, by reason of their engagement with the edges of therespective recesses, will then be bent apart in the manner shown inFigs. 4 and 6, the width of the spla being depend ent upon the length ofthe tween the plates, or to the amount of movement given the levers. Thewide mouths of ar inserted bethe recesses G, will permit of the splayedends being readily withdrawn.

Other means than the eccentrics B, B and stra s O, C,.may be employedfor operating 5 the evers D, D, such for instance, as cranKs fixed onthe shaft A, and I do not wish to confine myself exclusively to the useof those shown in the drawings, which have been included as illustratingthe preferred means of operation.

What I do claim as my invention, and desire to secure by Letters Patent,is

1. In means for splitting and spla ing the ends of metal bars, a pair ofshear p ates secured upon the adjacent faces of two levers pivoted on afixed axis, and so disposed as to keep the faces of the shear plates inclose contact, means for opening and closing the levers upon their axis,and a recess formed on the internal face of each shear plate andextending inwards from the front edge thereof,

such recess having a straight cutting edge adapted to lie in a parallelline with the corresponding edge of the other shear plate when thelevers are closed, substantially as L herein specified.

Q 2. In means for splitting and splaying the ends of metal bars, a pairof shear plates secured upon the adjacent faces of two levers eep thefaces of the shear plates in close contact, a power shaft, a pair ofeccentrics se cured thereon, and a pair of straps surrounding therespective eccentrics, to which straps the free ends of the respectivelevers are articulated, and a recess formed on the internal face of eachshear plate and extending inwards from the front edge thereof, suchrecess having a straight cutting edge adapted to lie in a parallel linewith the corresponding edge of the other shear plate when the levers areclosed, substantially as herein specified.

Dated this 1st day of February 1907 In testimony whereof, I have signedthis 1 specification in the presence of two subscrib- 5 ing witnesses.

EDWARD WRIGLEY.

lVitnesses:

EDWARD BROOKE-SMITH, E. F. COURTNEY.

pivoted on a fixed axis, and so disposed as to

